<h3>绑定innerHTML</h3>
<p [innerHTML]="htmlSnippet"></p>

<h3>插值绑定</h3>
<p>{{htmlSnippet}}</p>


<h4>不可信</h4>
<p><a [href]="dangerousUrl">dangerousUrl</a></p>
<h4>可信</h4>
<p><a [href]="trustedUrl">trustedUrl</a></p>
